An elevator motor includes a rotor with a rotor body carrying a traction sheave as well as a brake surface configured to be gripped by a motor brake. The barrier coating is plasma impulse chemical vapor deposited to the substrate material. The data made available by employing TAG-Games includes: 1) block accelerations, 2) time at stages of assembly completion, 3) total completion time for quizzes, and 4) correctness of assembly steps. The processing unit compares the input data to the output data, determines a first compensation value for the pre-distortion according to the comparison and updates the compensation value of the transmitter unit with the first compensation value. The process of the invention makes a particularly inexpensive preparation of acrylates having a very high purity possible.